/*
 * Copyright (C) 2007-2010 Geometer Plus <contact@geometerplus.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.zlibrary.core.image;

public abstract class ZLImageManager {
    private static ZLImageManager ourInstance;

    public static ZLImageManager Instance() {
        return ourInstance;
    }

    protected ZLImageManager() {
        ourInstance = this;
    }

    public abstract ZLImageData getImageData(ZLImage image);

    /*	protected final static class Color {
            public final byte Red;
            public final byte Green;
            public final byte Blue;

            public Color(final byte red, final byte green, final byte blue) {
                Red = red;
                Green = green;
                Blue = blue;
            }
        }
    */
    protected final static class PalmImageHeader {
        public final int Width;
        public final int Height;
        public final int BytesPerRow;
        public final int Flags;
        public final byte BitsPerPixel;
        public final byte CompressionType;

        public PalmImageHeader(byte[] byteData) {
            Width = uShort(byteData, 0);
            Height = uShort(byteData, 2);
            BytesPerRow = uShort(byteData, 4);
            Flags = uShort(byteData, 6);
            BitsPerPixel = byteData[8];
            CompressionType = (byte) (((Flags & 0x8000) != 0) ? byteData[13] : 0xFF);
        }
    }

    protected static int PalmImage8bitColormap[][] = {
            {255, 255, 255}, {255, 204, 255}, {255, 153, 255}, {255, 102, 255},
            {255, 51, 255}, {255, 0, 255}, {255, 255, 204}, {255, 204, 204},
            {255, 153, 204}, {255, 102, 204}, {255, 51, 204}, {255, 0, 204},
            {255, 255, 153}, {255, 204, 153}, {255, 153, 153}, {255, 102, 153},
            {255, 51, 153}, {255, 0, 153}, {204, 255, 255}, {204, 204, 255},
            {204, 153, 255}, {204, 102, 255}, {204, 51, 255}, {204, 0, 255},
            {204, 255, 204}, {204, 204, 204}, {204, 153, 204}, {204, 102, 204},
            {204, 51, 204}, {204, 0, 204}, {204, 255, 153}, {204, 204, 153},
            {204, 153, 153}, {204, 102, 153}, {204, 51, 153}, {204, 0, 153},
            {153, 255, 255}, {153, 204, 255}, {153, 153, 255}, {153, 102, 255},
            {153, 51, 255}, {153, 0, 255}, {153, 255, 204}, {153, 204, 204},
            {153, 153, 204}, {153, 102, 204}, {153, 51, 204}, {153, 0, 204},
            {153, 255, 153}, {153, 204, 153}, {153, 153, 153}, {153, 102, 153},
            {153, 51, 153}, {153, 0, 153}, {102, 255, 255}, {102, 204, 255},
            {102, 153, 255}, {102, 102, 255}, {102, 51, 255}, {102, 0, 255},
            {102, 255, 204}, {102, 204, 204}, {102, 153, 204}, {102, 102, 204},
            {102, 51, 204}, {102, 0, 204}, {102, 255, 153}, {102, 204, 153},
            {102, 153, 153}, {102, 102, 153}, {102, 51, 153}, {102, 0, 153},
            {51, 255, 255}, {51, 204, 255}, {51, 153, 255}, {51, 102, 255},
            {51, 51, 255}, {51, 0, 255}, {51, 255, 204}, {51, 204, 204},
            {51, 153, 204}, {51, 102, 204}, {51, 51, 204}, {51, 0, 204},
            {51, 255, 153}, {51, 204, 153}, {51, 153, 153}, {51, 102, 153},
            {51, 51, 153}, {51, 0, 153}, {0, 255, 255}, {0, 204, 255},
            {0, 153, 255}, {0, 102, 255}, {0, 51, 255}, {0, 0, 255},
            {0, 255, 204}, {0, 204, 204}, {0, 153, 204}, {0, 102, 204},
            {0, 51, 204}, {0, 0, 204}, {0, 255, 153}, {0, 204, 153},
            {0, 153, 153}, {0, 102, 153}, {0, 51, 153}, {0, 0, 153},
            {255, 255, 102}, {255, 204, 102}, {255, 153, 102}, {255, 102, 102},
            {255, 51, 102}, {255, 0, 102}, {255, 255, 51}, {255, 204, 51},
            {255, 153, 51}, {255, 102, 51}, {255, 51, 51}, {255, 0, 51},
            {255, 255, 0}, {255, 204, 0}, {255, 153, 0}, {255, 102, 0},
            {255, 51, 0}, {255, 0, 0}, {204, 255, 102}, {204, 204, 102},
            {204, 153, 102}, {204, 102, 102}, {204, 51, 102}, {204, 0, 102},
            {204, 255, 51}, {204, 204, 51}, {204, 153, 51}, {204, 102, 51},
            {204, 51, 51}, {204, 0, 51}, {204, 255, 0}, {204, 204, 0},
            {204, 153, 0}, {204, 102, 0}, {204, 51, 0}, {204, 0, 0},
            {153, 255, 102}, {153, 204, 102}, {153, 153, 102}, {153, 102, 102},
            {153, 51, 102}, {153, 0, 102}, {153, 255, 51}, {153, 204, 51},
            {153, 153, 51}, {153, 102, 51}, {153, 51, 51}, {153, 0, 51},
            {153, 255, 0}, {153, 204, 0}, {153, 153, 0}, {153, 102, 0},
            {153, 51, 0}, {153, 0, 0}, {102, 255, 102}, {102, 204, 102},
            {102, 153, 102}, {102, 102, 102}, {102, 51, 102}, {102, 0, 102},
            {102, 255, 51}, {102, 204, 51}, {102, 153, 51}, {102, 102, 51},
            {102, 51, 51}, {102, 0, 51}, {102, 255, 0}, {102, 204, 0},
            {102, 153, 0}, {102, 102, 0}, {102, 51, 0}, {102, 0, 0},
            {51, 255, 102}, {51, 204, 102}, {51, 153, 102}, {51, 102, 102},
            {51, 51, 102}, {51, 0, 102}, {51, 255, 51}, {51, 204, 51},
            {51, 153, 51}, {51, 102, 51}, {51, 51, 51}, {51, 0, 51},
            {51, 255, 0}, {51, 204, 0}, {51, 153, 0}, {51, 102, 0},
            {51, 51, 0}, {51, 0, 0}, {0, 255, 102}, {0, 204, 102},
            {0, 153, 102}, {0, 102, 102}, {0, 51, 102}, {0, 0, 102},
            {0, 255, 51}, {0, 204, 51}, {0, 153, 51}, {0, 102, 51},
            {0, 51, 51}, {0, 0, 51}, {0, 255, 0}, {0, 204, 0},
            {0, 153, 0}, {0, 102, 0}, {0, 51, 0}, {17, 17, 17},
            {34, 34, 34}, {68, 68, 68}, {85, 85, 85}, {119, 119, 119},
            {136, 136, 136}, {170, 170, 170}, {187, 187, 187}, {221, 221, 221},
            {238, 238, 238}, {192, 192, 192}, {128, 0, 0}, {128, 0, 128},
            {0, 128, 0}, {0, 128, 128}, {0, 0, 0}, {0, 0, 0},
            {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0},
            {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0},
            {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0},
            {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0},
            {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0},
            {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}
    };

    private static int uShort(byte[] byteData, int offset) {
        return ((byteData[offset] & 0xFF) << 8) + (byteData[offset + 1] & 0xFF);
    }
}
